为电子设计大赛准备的程序。基于STC12C5A系列单片机，硬件支持SPI总线，有我自己写的A7105，MMA7455，Nokia5110,TCS230的驱动.-Prepared for the electronic design contest procedure. Based on STC12C5A MCU, hardware SPI bus, have my own writing A7105, MMA7455, Nokia5110, TCS230 driver.